What can they do to tank parameters ?

You can easily over feed and f.. up your parameter happened to me, never again.

Yes please explain:-)

~Tony

Can't you control the auto feeder ie how wide the feeding hole is open and how many spin the feeder does?

~Tony

Ouch, sorry to hear that. Although, you can easily over feed and f.. up your parameter's without the use of an autofeeder too.

It depends on the auto-feeder. Some of them don't allow you to adjust the opening. Also, some of them turn on a power timer. That is, power on and hopper turns. Power off and hopper stops. Those can definitely cause problems if the power gets stuck ON. I definitely would not recommend those styles. The battery operated with built in timer and adjustable hopper opening is the way to go in my opinion.

http://www.eheim.com/resources/produ...0118100115.jpg

All auto feeder claim control of food distribution. What they don't say is that food storage in the distributor is not controlled and it becomes, moist, clumpy and after a while doesn't distribute well and in the quantity you've set at the start. It can literally dump in a lump! And its not pretty the mess that you can get after a long period of time. So i don't want that thing near my tank, no sir.

That's the one I have! :-) thanks for the kien stamped approval, it helps me sleep better at night!

~Tony

That the one i threw away after i used the hammer on it.

That would definitely be problematic ! Thankfully I have never had that problem with my auto-feeder int he 4 years that I've been using it. It has a built in fan to keep the food dry.

http://www.championlighting.com/pics.../eheim3581.jpg